许多前端表格展现中的数据格式需要使用千分位的数字展示形式, 只方便查看. 

没有找到JS中有格式化数字的方法, 自己简单做了一个.

  

<script src="jquery-1.6.js" language="javascript" type="text/javascript"></script>
<script language="javascript" type="text/javascript">$(function(){var temp = MilliFormat(100000.01);alert(temp);});function MilliFormat(fSum){var re = new RegExp("^(-?\\d+)(\\.\\d+)?{1}quot;); //判断是否是浮点数            var strSum; var behind = ""; if (re.test(fSum)) {strSum = new String(fSum);}else{return "";}if(strSum.indexOf(".") > -1) {                behind = strSum.split(".")[1];strSum = strSum.split(".")[0];}var len;var result = "";  var temp = "";     len = strSum.length;     while(len > 3){                temp = ","+strSum.substring(len - 3,len);strSum = strSum.substring(0,len - 3);                result = temp + result;len = strSum.length;}if(len > 0){result = strSum + result;}if(behind!="")result += "." + behind;return result;}</script>